Home / 20,672.51-28,513.59-13,963.88

Finding the Fourth Proportional to 20,672.51, 28,513.59 and 13,963.88

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Solution

The fourth proportional to 20,672.51, 28,513.59 and 13,963.88 is: 19,260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.51 : 28,513.59 = 13,963.88 : x
  2. Step 2: Convert to fraction form
    20,672.51/28,513.59 = 13,963.88/x
  3. Step 3: Cross multiply
    20,672.51x = 28,513.59 × 13,963.88
  4. Step 4: Simplify right side
    20,672.51x = 398,160,206.56
  5. Step 5: Solve for x
    x = 398,160,206.56/20,672.51
  6. Step 6: Final answer
    x = 19,260.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.